Heavy duty electrical drop cord connection



1960 F. P. KALLENBORN 2,963,677

HEAVY DUTY ELECTRICAL DROP com: common Filed Aug. 11, 1959 INVENTOR.Frank P. Kcllzn born.

United States Patent HEAVY DUTY ELECTRICAL DROP CORD CONNECTION Frank P.Kallenbom, 9240 S. 73rd Ave., Oak Lawn, 111.

Filed Aug. 11, 1959, Ser. No. 832,951

3 Claims. (Cl. 33989) This invention relates to a heavy duty cableconnector.

It is the principal object of the present invention to provide a cableconnector in which the sections cannot pull apart with normal use ofpulling, lifting, lowering or moving the cable cord.

It is another object of the invention to provide a cable cord connectorthat will not readily come apart and to which the cable wires areattached and clamped about their casings so that they may not readily bepulled from their terminals.

Other objects of the invention are to provide a cable connector, havingthe above objects in mind, which is of simple construction, inexpensiveto manufacture, has a minimum number of parts, easy to assemble, adaptedto be disconnected from one another of the cable connector parts withone of the parts being on one cable and the other parts being on theother cable, of pleasing appearance, compact, light in weight, efiicientand efiective in use.

For a better understanding of the invention reference may be had to thefollowing detailed description taken in connection with the accompanyingdrawings in which Figure 1 is an enlarged vertical sectional view of thecable connector taken generally on line 11 of Figure 2.

Figure 2 is a perspective view of the assembled connector with portionsof the retaining rings broken away.

Figure 3 is a collective and perspective view of the connector partsseparated from one another to show the contact terminals of one of theparts.

Figure 4 is a full perspective view similar to Figure 3 of the assembledparts with the full retaining rings shown.

Figure 5 is an end elevational view.

Referring now to the figures and 11 represent respectively connectorassemblies which are respectively attached to three-wire cables 12 and13. The connector part 10 is formed of two L-shaped blocks 14 and 15that are joined together and retained by fastening bolts 16 and 17 atthe opposite ends thereof and at their juncture there is retainedterminals 17, 18 and 19 for respectively receiving cooperating terminalcontacts 20, 21 and 22 in the separable connector part 11 similarlyconstructed of two parts 23 and 24 and retained together by fasteningbolts 25 extending through appropriate holes in the opposite ends of theconnector part 11. The cable 12 is secured to the connector part 10 bythe clamping together of the parts 14 and 15 thereof and its wires 27,28 and 29 are respectively secured by screws in appropriate holes in theconnector parts, the holes being indicated at 30, 31 and 32 withrespective imbedded wires 33, 34 and 35 that are connected to respectiveterminals 17, 18 and 19 lying in the connector part 10.

The connector part 11 is similarly wired so that wires 36, 37 and 38 ofthe cable are connected by screws in respective holes 39, 40 and 41 withimbedded wires 42, 43 and 44 that are connected respectively withcontacts 22, 21 and 20.

2,963,677 Patented Dec. 6, 1960 With the connector parts 10 and 11 soassembled with the cables 12 and 13 tightly gripped between them withthe holes provided in the engaging faces of the two parts of which theconnector part is made, the connecting parts can be made to overlie oneanother so that their contact terminals are in engagement. The one part11 is dropped over the part 10.

On the part 10 is a retaining ring 45 that can be threaded upon the samewith series of threads 46 lying along the corner edges of the parts andmay during the assembly be carried on the part 10 but with the partsassembled can be threaded so as to overlie both parts as best shown inFigure 2 and also in Figure 1. This ring will at that location couplethe parts together and remove the strain from the contact terminals.

A second ring 47 is carried on the connector part 11 and can be threadedto overlie the connector part 10 as best shown in Figures 1 and 4. Withthe connector parts so assembled they are rigidly and positivelyretained by the retaining rings 45 and 47 against longitudinaldisplacement from one another.

Upon turning the retaining rings toward the connector parts on whichthey are carried the connector parts can be readily released from oneanother and the one part lifted radially outwardly from the other part.

It should be now apparent that there has been provided a cable connectorfor heavy duty cables in which the cables will be rigidly and safelyheld by the connector parts.

While various changes may be made in the detailed construction it shallbe understood that such changes shall be within the spirit and scope ofthe present invention as defined by the appended claims.

I claim:

1. A cable connector comprising separable parts formed of L-shapedblocks, said blocks further formed of smaller L-shaped blocks joinedtogether along their vertical surfaces by means extending horizontallythrough the smaller blocks, terminals disposed in a horizontal plane andextending along inside faces of the L-shaped blocks at the joinedsurfaces of said smaller blocks, said terminals being oriented toprovide a locking relationship upon assembly against longitudinaldisplacement, means for connecting cable wires to the respectiveterminals, and means for holding the connector parts againstlongitudinal displacement from one another.

2. A cable connector according to claim 1 wherein at least one of theterminals on each block is disposed inwardly of the inside face of theL-shaped block and wherein at least one further terminal projectsoutwardly of the said face.

3. A cable connector as defined in claim 1 and said means for holdingthe connector parts against longitudinal displacement from one anothercomprising retaining rings internally threaded and said connecting partshaving their corners threaded for the operation of the retaininginternally threaded rings thereover, said rings normally carried on therespective connector parts but turnable to join the ends of the partstogether and over the contact bearing portions of the connector parts.

References Cited in the file of this patent UNITED STATES PATENTS1,967,021 Gary July 17, 1934 2,521,822 Boswell Sept. 12, 1950 FOREIGNPATENTS 148,861 France May 9, 1882

